Smart SPD Market and Prospects

Since 2012, domestic manufacturers have successively launched lightning arresters with alarm function, but most of them are products with remote signaling function, that is, switch alarm, which can only output normally open and normally closed trip signals, which can prevent damage to the product. displayed later. However, there is still no way to know the physical quantity change and deterioration state of the product; by recording the number of lightning strikes and other data through an external lightning strike counter, there is no major change in the improvement of the lightning protection device itself; at the same time, the backup protection device basically adopts the method of external circuit breaker, which This method not only does not play a good role in overcurrent protection, but also increases the residual voltage of the line, reduces the voltage limiting level of the protected equipment, and increases the fault point and reduces the reliability of use.

The railway power lightning protection grounding monitoring system more intuitively displays all the status of the power lightning protection equipment, timely feedback the lightning strike information to the user, reduces the inspection process, avoids the problem of unknown faults, and has real-time, operability and predictability characteristics, lightning protection and grounding
The monitoring system is a graphical operating system integrating lightning protection, remote monitoring, deterioration analysis, life alarm, fault alarm, equipment management, event recording and reporting statistics. In the era of intelligent development of equipment, the lightning protection grounding monitoring system is the development trend of lightning protection systems in the future, providing more perfect protection for lightning strike safety protection in various fields.
Compared with the conventional lightning protection system, it has the characteristics of higher safety, more convenient maintenance and stronger stability. There is no such product in the railway industry at present, which has reached the domestic leading level. The specific functions are as follows:

(1) Lightning protection function. The intelligent lightning protection device integrates the fuse into the lightning protection module to reduce the circuit encirclement between the short-circuit protector and the lightning protection device, and realize the improvement of the protection level of the lightning protection device. This technology is called fuse combination. It can effectively suppress various surge currents.
(2) Online monitoring function. The host will ensure the safety of the use of the lightning arrester, and its specific operations are to track the usage online, analyze and calculate the deterioration, and establish a real-time database of the performance of the arrester for users to query and understand the usage. .
(3) Fault alarm function. There are many problems in the use of the lightning arrester. Its long-term operation and repeated strong lightning strikes will cause various failures such as deterioration and aging, including thermal tripping, fuse opening, transient tube damage, leakage current, end of life, The module is illegally pulled out and many other situations. Once these situations occur, the monitoring slave station and the master station will communicate with each other.
Alarm immediately after monitoring data information. After receiving the alarm signal, the staff can learn about the fault type, installation location, occurrence time and other information on the software.
(4) Information output function. Users can connect different computers and other equipment through the data communication interface reserved by the data acquisition terminal according to their own needs, so as to easily obtain the operating status, fault information, event records, etc. of each lightning arrester, and replace the system for future use and maintenance. Provide convenience.

Railway power lightning protection and grounding monitoring technology has a wide range of application prospects in the field of railway power design. Considering and studying various problems of this technology, the solutions provided can better reduce the workload of maintenance units and make lightning protection equipment more secure. Reliable and conducive to the normal operation of the protected equipment.